An aqueous solution of a cation (represented as blue spheres in the diagram) is allowed to mix with a solution of an anion (represented as green spheres) and the following result is obtained:
Which combinations of cation and anion, chosen from the following lists, are compatible with the observed results? Explain.Cations: Na+, Ca2+, Ag+, Ni2+Anions: Cl−, CO2−3, CrO2−4, NO−3